AMD InterWave driver
Emmanuel Colbus sent this patch one month ago with the following
description:

There is a trivial bug in the file sound/isa/gus/interwave.c .
The variable isapnp is defined only if CONFIG_PNP is enabled, but it is
always used few lines after.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>